Effect of same chloromethylation and sulfonation process on the ion exchange membranes in terms of polymer types and ionic properties

Çelik, Aytekin; Hasar, Halil

doi:10.1007/s11581-020-03858-1

Cited by 4 publications

(3 citation statements)

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“…The chloromethylation procedure followed was reported by Celik et al 22 In a typical procedure, 7 g PSF was dissolved in 200 mL 1,2‐dichloroethane and stirred overnight. A mixture of 25 mL HCl and 25 mL formaldehyde solution, used as a chloromethylating agent, was transferred to the PSF solution.…”

Section: Methodsmentioning

confidence: 99%

“…However, it should be noted that few AEMs have been used specifically in Al‐air batteries. Various polymers such as polysulfone (PSF), polyphenylene oxide, 19,20 polyvinylidene fluoride, 21 and polystyrene have been investigated as polymer backbones for AEMs 22 . Among these polymers, PSFs are very stable at high temperatures and exhibit good conductivity.…”

Section: Introductionmentioning

confidence: 99%

“…Various polymers such as polysulfone (PSF), polyphenylene oxide, 19,20 polyvinylidene fluoride, 21 and polystyrene have been investigated as polymer backbones for AEMs. 22 Among these polymers, PSFs are very stable at high temperatures and exhibit good conductivity. From the literature, the intrinsic properties such as OH À conductivity, hydrophilicity, mechanical, and chemical stability of the membrane can be improved by incorporating inorganic materials and adjusting the cationic group of the polymer.…”

Section: Introductionmentioning

confidence: 99%

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Quarternized polysulfone/ZSM‐5 zeolite composite anion exchange membrane separators for aluminum‐air battery

Lekoane

Msomi

2023

J of Applied Polymer Sci

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A membrane is a critical component of an Al‐air battery because it provides ion transport and ensures separation of the anode and cathode. In this work, a series of quaternized polysulfone (QPSF) membrane blended with ZSM‐5 zeolite anion exchange membranes (AEMs) were fabricated by solution casting to be used as separators in Al‐air batteries. All membranes showed moderate to excellent water uptake (WU), swelling ratio, ion exchange capacity (IEC), and ion conductivity measurements (IC). Incorporation of ZSM‐5 zeolite resulted in hydrophilicity and improved WU, with QPSF/3 wt% ZSM‐5 retaining 114% water at room temperature. The QPSF/3 wt% ZSM‐5 composite membrane was the best performing membrane with the IEC and the highest hydration number of 2.85 mmol g−1, 2.23, and a maximum of IC of 229.85 mS cm−1 at room temperature, respectively. QPSF/3 wt% ZSM‐5 retained 65% of its original IC in an alkaline medium after 7 days. QPSF/3 wt% ZSM‐5 exhibited a stable discharge voltage of 1.3 V and a specific capacity of 11,716 mAh/gAl in a laboratory fabricated Al‐air cell. This study provides an excellent anion exchange composite membrane separator candidate for Al‐air battery applications.

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Section: Methodsmentioning

confidence: 99%